It is an object of the present invention to provide a method for manufacturing a display device in which unevenness generated under a light-emitting element does not impart an adverse effect on the light-emitting element. It is another object of the invention to provide a method for manufacturing a display device in which penetration of water into the inside of the display device through a film having high moisture permeability can be suppressed without increasing processing steps considerably. A display device of the present invention comprises a thin film transistor and a light-emitting element, the light-emitting element including a light-emitting laminated body interposed between a first electrode and a second electrode; wherein the first electrode is formed over an insulating film formed over the thin film transistor; and wherein a planarizing film is formed in response to the first electrode between the first electrode and the insulating film.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A display device comprising in a pixel: a transistor comprising a semiconductor layer, a gate electrode layer and a gate insulating film therebetween; a first insulating film over the transistor; a conductive film over the first insulating film, a second insulating film over the first insulating film and the conductive film; a third insulating film over the second insulating film; a first electrode over the third insulating film, in electrical contact with the conductive film through an opening in the third insulating film and an opening in the second insulating film; a partition wall over the third insulating film and the first electrode; a light-emitting laminated body over the partition wall, and in electrical contact with the first electrode; and a second electrode over and in electrical contact with the light-emitting laminated body, wherein the second insulating film is made of an inorganic material, and wherein the third insulating film is made of an organic material and is generally thinner than the second insulating film, and generally thinner than a portion of the conductive film situated on a top surface of the first insulating film.
2. A display device comprising in a pixel: a transistor comprising a semiconductor layer, a gate electrode layer and a gate insulating film therebetween; a first insulating film consisting of inorganic material over the transistor; a conductive film over the first insulating film, a second insulating film consisting of inorganic material over the first insulating film and the conductive film; a third insulating film consisting of organic material over the second insulating film; a first electrode comprising a conductive material having a work function of 4.0 eV or more over the third insulating film, in electrical contact with the conductive film through an opening in the third insulating film and an opening in the second insulating film; a partition wall over the third insulating film and the first electrode; a light-emitting laminated body over the partition wall, and in electrical contact with the first electrode; and a second electrode over and in electrical contact with the light-emitting laminated body, wherein the third insulating film is generally thinner than the second insulating film, and generally thinner than a portion of the conductive film situated on a top surface of the first insulating film.
3. A display device comprising in a pixel: a transistor comprising a semiconductor layer, a gate electrode layer and a gate insulating film therebetween; a first insulating film comprising silicon nitride over the transistor; a conductive film over the first insulating film, a second insulating film comprising silicon nitride over the first insulating film and the conductive film; a third insulating film consisting of one of acrylic, polyimide and siloxane over the second insulating film; a first electrode comprising ITO over the third insulating film, in electrical contact with the conductive film through an opening in the third insulating film and an opening in the second insulating film; a partition wall over the third insulating film and the first electrode; a light-emitting laminated body over the partition wall, and in electrical contact with the first electrode; and a second electrode over and in electrical contact with the light-emitting laminated body, wherein the third insulating film is generally thinner than the second insulating film, and generally thinner than a portion of the conductive film situated on a top surface of the first insulating film.
4. The display device according to claim 1 , further comprising a wiring electrically connecting the first electrode to the conductive film.
5. The display device according to claim 2 , further comprising a wiring electrically connecting the first electrode to the conductive film.
6. The display device according to claim 3 , further comprising a wiring electrically connecting the first electrode to the conductive film.
7. The display device according to claim 1 , further comprising a buffer layer between the first electrode and the light-emitting laminated body.
8. The display device according to claim 2 , further comprising a buffer layer between the first electrode and the light-emitting laminated body.
9. The display device according to claim 3 , further comprising a buffer layer between the first electrode and the light-emitting laminated body.
10. The display device according to claim 1 , wherein the third insulating film is thinner than the second insulating film.
11. The display device according to claim 2 , wherein the third insulating film is thinner than the second insulating film.
12. The display device according to claim 3 , wherein the third insulating film is thinner than the second insulating film.
13. The display device according to claim 1 , further comprising: a substrate on which is formed the thin film transistor; an opposite substrate; an insulating sealing material configured to seal a space formed between the substrate and the opposite substrate; and a wiring formed from a same layer as the conductive film and overlapped by the insulating sealing material.
14. The display device according to claim 2 , further comprising: a substrate on which is formed the thin film transistor; an opposite substrate; an insulating sealing material configured to seal a space formed between the substrate and the opposite substrate; and a wiring formed from a same layer as the conductive film and overlapped by the insulating sealing material.
15. The display device according to claim 3 , further comprising: a substrate on which is formed the thin film transistor; an opposite substrate; an insulating sealing material configured to seal a space formed between the substrate and the opposite substrate; and a wiring formed from a same layer as the conductive film and overlapped by the insulating sealing material.
16. An electronic device in which is mounted the display device according to claim 1 .
17. An electronic device in which is mounted the display device according to claim 2 .
18. An electronic device in which is mounted the display device according to claim 3 .
19. The display device according to claim 1 , wherein a portion of the third insulating film formed on a topmost portion of the second insulating film is thinner than the topmost section of the second insulating film and thinner than the portion of the conductive film located on the top surface of the first insulating film.
20. The display device according to claim 2 , wherein a portion of the third insulating film formed on a topmost portion of the second insulating film is thinner than the topmost section of the second insulating film and thinner than the portion of the conductive film located on the top surface of the first insulating film.
21. The display device according to claim 3 , wherein a portion of the third insulating film formed on a topmost portion of the second insulating film is thinner than the topmost section of the second insulating film and thinner than the portion of the conductive film located on the top surface of the first insulating film.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
December 20, 2012
June 9, 2015
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